#!/usr/bin/env bash

# Copyright 2019 The Goodrain Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

isExist=`netstat -pantu | grep ":53 " | grep "kube-dns" | wc -l`

if (($isExist != 0)); then
  exit 0
else
  exit 1
fi